Experimental observation of internally-pumped parametric oscillation and quadratic comb generation in a $\chi^{(2)}$ whispering-gallery-mode microresonator
Abstract
We report on the experimental observation of internally-pumped parametric oscillation in a high-Q lithium niobate microresonator under conditions of natural phase-matching. Specifically, launching near-infrared pump light around 1060 nm into a -cut congruent lithium niobate microresonator, we observe the generation of optical sidebands around the input pump under conditions where second-harmonic generation is close to natural phase-matching. We find that a wide range of different sideband frequency shifts can be generated by varying the experimental parameters. Under particular conditions, we observe the cascaded generation of several equally-spaced sidebands around the pump -- the first steps of optical frequency comb generation via cavity-enhanced second-harmonic generation.
Keywords
Cite
@article{arxiv.1912.02804,
title = {Experimental observation of internally-pumped parametric oscillation and quadratic comb generation in a $\chi^{(2)}$ whispering-gallery-mode microresonator},
author = {Ian Hendry and Luke S. Trainor and Yiqing Xu and Stéphane Coen and Stuart G. Murdoch and Harald G. L. Schwefel and Miro Erkintalo},
journal= {arXiv preprint arXiv:1912.02804},
year = {2021}
}
Comments
5 pages, 5 figures; a wider range of indicative results added to Fig. 3 and text changed accordingly in version 2